Product Details:
SIEMENS 16114-171R is a 10-slot MODULRAC rack chassis belonging to QUADLOG and APACS+ DCS control platforms, acting as the mechanical carrier and electrical backplane base for installing CCM, ACM, I/O and communication modules. It integrates built-in backplane bus traces and 24VDC power distribution circuit, providing stable high-speed bus channel and power supply for all inserted cards inside the rack. The chassis adopts heavy-duty reinforced metal frame structure with anti-vibration treatment, suitable for long-term installation inside industrial control cabinets with continuous vibration and fluctuating ambient temperature. The internal backplane adopts precise impedance matching and shielding design, effectively restraining signal crosstalk and electromagnetic coupling interference between adjacent slots to guarantee reliable bus data transmission among different control modules.
Each slot is equipped with standard guide rails and locking buckles, supporting convenient plug-in operation and hot swap of compatible modules during on-site maintenance and fault replacement, which allows technicians to replace defective boards without removing the whole rack assembly. The rack is fitted with dedicated power input terminals and protective grounding points, facilitating centralized cabinet wiring and system grounding setup to improve the overall anti-interference capacity of the DCS system. The R suffix stands for this specific hardware revision version, which defines the backplane circuit layout, slot definition and compatibility scope for QUADLOG series hardware. Every spare rack will pass continuity inspection, bus signal stability test and compatibility verification before shipment to ensure seamless matching with original QUADLOG modules. It is widely stocked as replacement chassis and expansion rack spare parts for legacy APACS+ process control systems.

Industry Applications: Applied in petrochemical auxiliary skids, gas flow control systems, boiler closed-loop control rooms and water treatment facilities for conventional analog signal acquisition and valve regulating output.
Note: Confirm SAM combined I/O feature and hardware revision before ordering
This is from our current stock.
| A-B | 1756-DNB |
| A-B | 1756-DNB |
| A-B | 1756-EN2T |
| A-B | 1756-EN2T |
| A-B | 1756-EN2TXT |
| A-B | 1756-EN3TR |
| A-B | 1756-ENBT |
| A-B | 1756-ENBT A |
| A-B | 1756-ENBT/A |
| A-B | 1756-IB16 |